hines



(No Model.)

J. H. HINEs.

DIE STOCK.

No. 332,801. Patented Dec. 22, 1885.

N. PETERS. Pholo-Lilhngmplmr. Washmglon. 04 D.

the angles of the octagon standing opposite UNITE STATES PATENT FFTCEQJOSEPH H. HINES, OF OALISTOGA, CALIFORNIA.

DIE-STOCK.

SPECIFICATION forming part of Letters Patent No. 332,801, dated December22, 1885.

Application filed August 7, 1885.

To all whom it may concern:

Be it known that I, JOSEPH H. HINEs, of Oalistoga, Napa county, State ofCalifornia, have invented an Improvement in Screw-Outting Die-Stocks;and I hereby declare the following to be a full, clear, and exactdescription of the same.

My invention relates to a device for cutting screws; and it consists ofdies with an inclosing head or case, having ratchet teeth upon itsexterior periphery, a chambered stock, within which this ratchetisfitted, and a means for retaining it therein, handles extending onopposite sides of this stock, and provided with spring-pawls, whichengage the ratchet-head upon opposite sides, and a sliding key or look,by which the ratchet-head is prevented from revolving at will.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is an exterior view of my device. Fig. 2 is aview showing the stock opened. Fig. 3 is asection taken through theratchet-head and the dies. Fig. 4 is a longi tudinal section. Fig. 5 isa view of the dies.

A is a cylindrical head having ratchet-teeth B upon its exteriorperiphery, and having the interior chambered, so as to receive the diesG, which are fitted therein. These dies are made in two parts in theusual manner, having theinner faces screw-threaded, so as to cut acorresponding thread upon a bolt or rod. The exterior of the dies aremade so as to present an octagonal form when placed together,

the angles of the interior spaces through which the chips or cuttingsescape. By this construction the dies are made strongest at the pointwhere they would be weak if made circular, and at the same time I avoidthe weight and clumsiness which would be given them if they were square.The chamber in the head A, into which these dies fit, is also madeoctagonal, so that they may be held in it and prevented from turning,and it is of sufficient size to allow the dies to separate to as greatan extent as may be desired for the largest work. In order to regulatethem for smaller Work, small plates may be introduced behind them, so asto cause them to approach each other. These dies are held in place inthe Serial No.173,877. (No model.)

one end, this plug having a hole through it large enough to admit anysize bolt or rod, upon which a screw-thread is to be cut, and theopposite end of the part A is also similarly perforated, leaving aflange sufficient to hold the dies in place.

E is the stock, having a chamber formed in its central portion, intowhich the ratchethead A may fit. upon its sides,which fit againstcollars formed upon the head at each side of the ratchetteeth, and ofsmaller diameter, so that the head is held securely in place, and isallowed to revolve within the stock. In order to introduce thisratchet-head, or remove it, one side of the stock is hinged, as shown atG, to turn upon one of the projecting ends or handles, having a portioncut away, as shown at I, so that when this part is brought opposite thehinged portion of the stock the latter may be opened, and when thecollar X is turned, so as to cover this hinged portion, it holds itfirmly in place. Handles J extend in opposite directions from each sideof the stock, and are secured in extensions K,which are formed with thestock. These extensions are hollow, and pawls L extend inwardly throughthese extensions, so that their inner ends will engage with the teeth ofthe ratchet head. Springs M serve to press these pawls inward againstthe periphery of the ratchet, and the pawls are so arranged that whenone engages with the tooth upon one side of the ratchet, the other pawlwill stand midway between the teeth upon the opposite side.

When this device is to be used, it is placed so that the rod or bar uponwhich the screwthread is to be cut will extend through the holes in theratchet-head and into the die within it. When there is plenty of room toswing the holdingcase with its levers, it may be turned entirely arounduntil the thread is cut; but when the work is being done in a smaller orcramped space it will only be necessary to move the levers a shortdistance from side to side in an oscillatory manner, and theratchet-head will be advanced one or more teeth at each movement of theexterior case. The friction or bite of the die upon the rod or bar whichis being cut will be sufficient to hold head A by a screw plug, D, whichfits into This chamber has flanges F it while the handles are beingturned backward, and the pawls will slip over the teeth of the ratchetto get a new hold. By this construction I am enabled to cutscrew-threads in places otherwise difficult of access. WVhen the threadhas been cut as far as may be desired, and it is necessary to turn thedie backward, so as to remove it from the rod, the ratchet may belocked, so that it will turn with the holding-case and levers ,by meansof a sliding key, N, which fits in a dovetailed slot in one side of thecase, and maybe made to enter a corresponding notch in the ratchet headwhen desired, so as to lock the two together.

It will be manifest that the whole device may be used for turning a tapby having a square hole through the rat-chethead, which will fit uponthe square end of the tap, the operation being similar.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. lhe combination, with the case and the ratchet-head secured therein,of screw-cutting dies, whose outer faces correspond to the configurationof their inner faces, and a screwcap for retaining the dies in place,substantially as herein described.

2. In a screw-cutting device, the combination, with a cylindrical caseand a ratchethead secured therein, of the dies O,within an interiorchamber in the head, and whose outer and inner faces have a likeconfiguration, the perforated screw cap, whereby the dies are held inplace, and the spring-pawls extending into the central compartment ofthe case from opposite sides, substantially as herein de scribed.

3. A screw-cutting device consisting of a cylindrical ratchet-headhaving a central compartment within which dies are secured, incombination with an exterior case having a central chamber within whichthe ratchet-head may rotate, spring-pawls extending into said chamber,to hold the ratchet head, a hinged 45

